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Round|Natural|IGI

0.51ct E I1 Round Natural Diamond

GD • E/I1 • IGI 617454909

Shape and cutting style on the report: Round brilliant

Certificate IGI 617454909

Diamond specifications and retailer prices

From £235 GBP
$313 USD
As of October 28, 2026
Save £665 GBP (74%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £900 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded E colour (colourless) and I1 clarity (included), with a standard cut grade and certified by IGI 617454909. Listed at 7 retailers as of October 28, 2026, with prices from £235 to £900, a £665 spread on the same certified stone. NZ Jewellers lists it at £900. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
E
Colour
I1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle30.5°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 617454909
Dimensions5.36 × 5.34 × 2.96 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
5.36 mm5.34 mm0.51 ctE / I1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 617454909
Side View
Table 67.0%Crown 30.5°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 55.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £900 GBP|Low: £247 GBP|High: £900 GBP|Avg: £464 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 30, 2026
Retailer 4£251 GBP
Retailer 3£319 GBP
Retailer 5£353 GBP
Retailer 2£442 GBP
NZ Jewellers£900 GBP

20 data points across 5 retailers

7 retailers£235 GBP to £900 GBP

B+
Cheapest Retailer
-
£235 GBP
$313 USD
B+
Retailer 2
-
£253 GBP
$337 USD
View
B+
Retailer 3
-
£262 GBP
$349 USD
View
B+
Retailer 4
-
£316 GBP
$421 USD
View
B+
Retailer 5
-
£319 GBP
$424 USD
View
B+
Retailer 6
-
£442 GBP
€560 EUR
View
Most Expensive
C
NZ Jewellers
f2ac14a0-5c88-4de0-be75-746a70c3ebf4 · Oct 30
£900 GBP
$1,199 USD
View
6 more retailers have this diamond
Prices start from £235 GBPSave up to £665 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
0.51ct Round
£235 GBP